The Chevrolet Corvette Grand Sport combines the Corvette’s LS3-based powertrain with unique, wide-body styling and a racing-bred suspension for a distinctive model that delivers a great balance of road and race track performance. It is offered in both coupe and convertible body styles, with either a six-speed manual or six-speed automatic transmission. The LS3 6.2L engine will kick out 430 horsepower and deliver 575 Nm of torque with the standard exhaust system. An optional two-mode exhaust system elevates the power ratings to 436 horses and 580 Nm of torque.